13=5+3b-12

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Solution for 13=5+3b-12 equation: 



13=5+3b-12

We move all terms to the left:

13-(5+3b-12)=0

We add all the numbers together, and all the variables

-(3b-7)+13=0

We get rid of parentheses

-3b+7+13=0

We add all the numbers together, and all the variables

-3b+20=0

We move all terms containing b to the left, all other terms to the right

-3b=-20

b=-20/-3

b=6+2/3

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